Alert archive / Florida / Tornado Warnings in 2017

Tornado Warning 4, NWS Tampa Bay, FL

January 22, 2017Sumter County, Florida

NWS Tampa Bay, FL issued this tornado warning at Jan 22, 2017, 5:59 PM EST for Sumter County, Florida. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jan 22, 2017, 5:59 PM EST (22:59 UTC)
Expired: Jan 22, 2017, 6:30 PM EST
In force: 31 min
Issued by: NWS Tampa Bay, FL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Sumter County, FL

The radar

The Tampa radar (KTBW), 105 km from the middle of the area, began a volume at 22:59 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jan 22, 4:35 PM EST	Tornado Watch PDS	SPC	5 hr

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 11.0 hours before the alert went out and 105 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 906 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 606 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 258 m²/s²
0-3 km storm-relative helicity: 283 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 5.7

Open this sounding in Storm Lab

The text

As transmitted.

772 
WFUS52 KTBW 222259
TORTBW
FLC119-222330-
/O.NEW.KTBW.TO.W.0004.170122T2259Z-170122T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tampa Bay Area Ruskin FL
559 PM EST SUN JAN 22 2017

The National Weather Service in Ruskin has issued a

* Tornado Warning for...
  East central Sumter County in central Florida...

* Until 630 PM EST
    
* At 559 PM EST, a severe thunderstorm capable of producing a tornado
  was located 7 miles west of Mascotte, moving northeast at 60 mph.

  HAZARD...Tornado. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* This tornadic thunderstorm will remain over mainly rural areas of
  east central Sumter County, including the following locations:
  Webster, Tarrytown and Center Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to an interior room on the lowest floor of a
sturdy building. Avoid windows. If you are outdoors, in a mobile
home, or in a vehicle, move to the closest substantial shelter and
protect yourself from flying debris.

&&

LAT...LON 2854 8196 2851 8202 2858 8209 2873 8196
TIME...MOT...LOC 2259Z 225DEG 51KT 2858 8201 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

TBW

The office that day

Everything else NWS Tampa Bay, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 22, 4:48 AM EST	Gale Warning	TBW		38 hr
Jan 22, 5:01 AM EST	Coastal Flood Statement	TBW	Charlotte, Citrus, Hernando, Hillsborough, Lee, Levy and 4 more	19 hr
Jan 22, 5:01 AM EST	High Surf Advisory	TBW	Charlotte, Hillsborough, Lee, Manatee, Pinellas, Sarasota	56 hr
Jan 22, 4:34 PM EST	Special Marine Warning	TBW		86 min
Jan 22, 5:08 PM EST	Special Marine Warning	TBW		37 min
Jan 22, 5:23 PM EST	Severe Thunderstorm Warning	TBW	Levy	37 min
Jan 22, 5:41 PM EST	Severe Thunderstorm Warning	TBW	Pasco	34 min
Jan 22, 5:42 PM EST	Tornado Warning	TBW	Hernando, Pasco	33 min
Jan 22, 5:50 PM EST	Tornado Warning	TBW	Citrus, Sumter	25 min
Jan 22, 5:55 PM EST	Special Marine Warning	TBW		35 min
Jan 22, 5:56 PM EST	Special Marine Warning	TBW		34 min
Jan 22, 5:59 PM EST	Severe Thunderstorm Warning	TBW	Citrus, Hernando, Sumter	46 min
Jan 22, 6:04 PM EST	Special Marine Warning	TBW		56 min
Jan 22, 6:06 PM EST	Severe Thunderstorm Warning	TBW	Levy	24 min
Jan 22, 6:12 PM EST	Severe Thunderstorm Warning	TBW	Hillsborough, Manatee, Sarasota	32 min
Jan 22, 6:20 PM EST	Tornado Warning	TBW	Hernando, Sumter	25 min
Jan 22, 6:42 PM EST	Severe Thunderstorm Warning	TBW	Citrus, Hernando, Pasco, Sumter	63 min
Jan 22, 6:44 PM EST	Special Marine Warning	TBW		46 min

Nearby

Tornado Warnings in Florida, 2017 Every tornado warning in 2017 Tornadoes in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.